Electric cut-out.



A. V. A. MGHARG.

ELECTRIC GUT-OUT. APPLEGATION FILED APR.30,1913." 1,084,703, PatentedJan. 20, 1914.

2 SHEETS-SHEET l.

A. V. A. MUHARG.

ELECTRIC CUT-OUT.

APPLICATION FILED APR.so,191s.

1,084,703. Patented Jan. 2Q, 19141..

UNTTED sTATEs PATENT oEEroE.

ARTHUR v. A MCHARG, or NEW YORK, N. Y., AssIoNoR 'ro T Homns E. MURRAY,or

NEW YORK, N. Y.

ELECTRIC CUT-OUT.

To all whom it may concern.'

. Be it known that I, ARTHUR V. A. Mc- IIARG, a citizen of the UnitedStates, residing at New York, in the county of New York and State of NewYork, have invented a certain new and useful Improvement in ElectricCut-Outs, of which the following is a specification. A I

The invention is a cut-out block designed more particularly for use in athree-wire system. A plurality of mutually insulated bus-bars extendthrough and across the base block. Above saiddars and insulatedtherefrom are pairs of contacts. Circuit terminals of the system areconnected to one member of each pair of contacts. The remain 'ingmembers of said pairs are respectively connected to the bus-bars. Amultiple switch lever pivoted on the base block carries a plurality ofseparable fuseplugs, so arranged that when the lever is swung forward,said plugs are brought between the pairs of contacts to close circuit,and when the lever" is swung back, said plugs are moved out of circuitand can 'readily be removed from said lever. The three conductors of thesystem are thus fused or de-fused by a single movement of the lever, and1n` dividual fuses may be readily removed and` replaced while thecircuit is open.

The invention consists in the construction hereinafter more particularlypointed out. In the accompanying drawings-Figure 1 is a section on theline m, m of Fig. 2. Fig.

2 is an endelevation. Fig. 3 is a top view..

of the base block. p

Similar' numbers and letters of reference indicate like parts.

The base block 1 is preferably of refractory insulating material, suchas porcelain, and has two side walls 2, 3 and two intermediatepartitions so as to divide the space between said walls intothreechannels 4, 5., 6. Extending across saidchannels and passingthrough the walls 2, 3 and partitions are three superposed bus-bars 7 8,9, mutually insulated by plates lO, 11 of insulating material in eachchannel, as hereinafter more particularly described.

13, 14, 15 are three circuit conductors having at their ends metallicthimbles provided With laterally projecting arms l16, 17 is. 1 lleferring rst to channel 4: In said channel, is a block 19l ofinsulating material havmg a downward extension 20 on one side which fitsagainst the edges of the bus bars 7 8', 9, as shown in Fig. 1. A metal'plate 21 extends over the top of block 19 and along the outer side ofdownward extension 20. To this lastlnamed portion of plate 21, the arm16 on conductor 13 issecured by the screw 22. The plate 21 carries ,avertical spring contact pla-te A, Fig. 3. On top of block 19 and facingContact plate A is a con tact plate B, carried by a metal plate 23 whichextends down over the right hand Patented Jan. 20, 1914.

edge of block 19, as shown in Fig. 1, and then under said block andbet-Ween the same and bus-bar It will be obvious that by closing circuitbetween plates A and B, electrical connection is established fromconducf tor 13 to bus-bar 9.

Referring to channel 5: The arm 17 of conductor 14 is connected to' aplate 24, Fig. 3, similar to 21, on a block 25 similar to 19, whichplate carries the vertical spring contact C, Fig. 3. On Vsaid block 25and facing contact plate C is a contact plate D, carried by a metalplate 26 which extends down over the.right hand edge of block 25 andenters between the bus-bar 8 and the insulating separating piece abovesaid block, as shown in dotted lines in Fig. 1. Therefore, by closingcircuit between plates C and D, electrical connection is establishedfrom conductor 14 to bus-bar 8.

Referring to channel 6: The arm 1 8 of conductor 16 is connected to aplate 27, similar to plates 21 and `24,0n a block 28 similar to blocks19 and 25, which plate carries a vertical spring contact E, Fig. 3. Onsaid block 28 and facing contact plate E is a contact plate F carried bya metal plate 29 which extends down over the right hand edge of block 28and enters between the busbar 7 and the insulating separating pieceabove said bar, as shown in dotted lines, Fig. 1. Therefore, by closingcircuit bet-Ween plates E and F, electrical connection is establishedfrom conductor 16 to bus-bar 7 The aforesaid .electrical connectionbetween the contacts A B, C D and E F is effected by fuses G which 4aresupported on ace between the members of any of said pairs of conta'cts,the

arms of the fuse on opposite sides of said plug meet `said contacts. lnorder to move the fuse plugs simultaneously into and out of positionbetween said contacts, I provide a rock shaft 3Q, journaled on the walls2, 3, and having three arms 3l, 32,/33, which are split at their ends totightly fit in openings in `said plugs. Said arms have upward extensionswhereby they arec'onnected to a bar 34 which carries an operating handle35, b

means of which handle said rock shaft 30 may be vibrated for the purpose'above stated. Said bar 34 also carries a bracket 36, to which issecured a metal shield 37, divided by partitions 88 into threecompartments corresponding to channels 4, 5, 6 and .lined with asbestos.Said shield protects the hand ofthe operator from the ex losion ofas'fuse during manipulation of the andle 35, and also provides barriersbetween the fuses to prevent the explosion of one fuse injuring eitherof the other two fuses.

1.` A base block, a plurality of mutually insulated bus-bars extendingtransversely through said block, a plurality of pairs of contactssupported above andinsulated from said bus-bars, means for connectingcorre` spending members of said pairs of contacts, each to a diiierentbus-bar, circuit terminals connected respectively to the remainingmembers of said pairs of contacts, and a multiple switching device forclosing circuit between the members of said pairs.

2. A base block, a plurality of mutually yinsulated bus-bars extendingtransversely 'through said block,

a plurality of pairs of contacts supported above and insulated from saidbus-bars, means for connecting corresponding members of said pairs ofcontacts, each to a different busbar, circuit terminals connectedrespectively to the remaining members of said pairs of contacts, alurality of fuse-plugs, each coperating wit one of said pairs ofcontacts, and means for simultaneously moving said fuse-plugs into andout of cooperative relation with said contacts.

3. A base block, a plurality of mutually insulated bus-bars extending`transversely through'said block, a plurality of pairs of contactssupported above and insulated from said bus-bars, means for connectingcorresponding members of said pairsof contacts, each to a. differentbus-bar, circuit terminals connected respectively to the remainin`members of said airs of contacts, a pivoted multiple switch Ilever, anda plurality of yfuse-plugs on said lever, each plug coperatng with oneof said pairs of contacts. 4. A base block, a plurality of mutuallyinsulated bus-bars extending transversely Athrough said block,

connectedto the other member o a plurality of pairs of y contactssupported above and insulated from said bus-bars, means for connectingcorresponding members of said pairs of contacts, each to a diil'erentbus-bar, circuit terminals connected respectively to the remainingmembers of said pairs of contacts, a pivote multiple switch lever, and aplurality of fuse-plug}sx removably supported upon said lever, eac plugcoperating with one of said pairs of contacts.

5. A base block, a plurality of mutually insulated bus-bars extendingtransversely through said block', a. plurality of pairs of contactssupported above and insulated from said bus-bars, means :tor connectingcorre sponding members of said pairs of Contact@ each to a differentbus-bar, circuit terminals connected respectively to the remainingmembers of said pairs of contacts, a multiple switch lever he ving aplurality of projecting arms, and a plurality of removable fuseplugs,provided with openin s receiving said arms, and coperating with saidpairs of contacts.

6. A base block, a bus-bar extending transversely through said block, apair of contacts supported above and insulated from said bus-bar, onemember of saidr pair of contacts, a U-shaped conducting strip havin onearm said pair of contacts and its other arm in contact with saidbus-bar, and movable means for closing circuit between said contacts.

7. A base block, a pair of contacts thereon, a fuse carrier coperatingwith said c0r1- tacts, a rocli shaft on said block, an operating levertherefor, an arm onsaid shaft engaging said fuse carrier, and abox-shaped shield carried by said rock shaft and receiving the-upperportion of said carrier.

8. A base block, a plurality of pairs of contacts thereon, fuse carrierscoperating with said pairs of contacts, a rock shaft on said block, anoperating lever therefor, arms on said shaft engaging said carriers, aboxshaped shield carried by said rock shaft, and

' partitions in said shield dividing the same into compartmentsrespectively receiving the upper portions of said carriers. l

, base, a plurality of bus-bars thereon, a plurality of pairs ofcontacts, each having one member connected to one of said bus'- bars,'circuit terminals connected to the other i members of said pairs, fuseplugs adapted to enter and close circuit' between said contacts, and asupport for said plugs movably secured to said base and operable to brinsaid plugs into and out of coperative re ation with said contacts.

10. A base, a plurality of bus-bars thereon, a plurallty` of pairs ofcontacts, each having one member connected to one of said bus-bars,circuit terminals connected to 'the plug?y entering .and closing circuitbetween other members of said pairs, a bell-crank said contacts. 1olever pivoted on said base, and fuse .plugs In testimony whereof I haveaffixed my on said lever; the said plugs entering and signature-inpresence of two Witnesses.

5 closing circuit between said Contacts. ARTHUR V. A. MCHARG.

, 1l. A base, a pair of contacts thereon, a lWitnesses: bell-crank leverpivoted on said base, and a GERTRUDE T. PORTER,

fuse plug on one -arm of said lever; the said MAY T. MCGARRY.

